Battery Apparatus, Method for Controlling Battery Apparatus to Exhaust Gas, and Energy Storage Device

Abstract

A battery apparatus includes a protection housing, at least one battery module, at least one first exhaust assembly, at least one second exhaust assembly, and a control unit. Two types of exhaust assemblies are disposed on the protection housing in the battery apparatus. One type of exhaust assembly is controlled to inject gas, and the other type of exhaust assembly is controlled to exhaust gas, so that an air flow is formed in two regions. The high-temperature and high-pressure gas exhausted by the battery module inside the protection housing is taken to an exterior of the protection housing by the battery apparatus, and heat inside the protection housing is taken away by the battery apparatus.

What is claimed is: 
     
         1 . A battery apparatus, comprising:
 a protection housing;   at least one battery module disposed in the protection housing;   a first exhaust assembly disposed on the protection housing;   a second exhaust assembly disposed on the protection housing; and   a control unit coupled to the protection housing and configured to;
 control the first exhaust assembly to be in a first state and the second exhaust assembly to be in a second state; or 
 control the first exhaust assembly to be in the second state and the at second exhaust assembly to be in the first state, 
 wherein the first state is when first gas outside the protection housing is intook into the protection housing, and 
 wherein the second state is when second gas inside the protection housing is exhausted to the outside of the protection housing. 
   
     
     
         2 . The battery apparatus of  claim 1 , further comprising an isolation baffle fastened inside the protection housing, wherein the isolation baffle divides the protection housing into a first region and a second region, wherein the first region communicates with the second region, wherein the first exhaust assembly communicates with the second region, and wherein the second exhaust assembly communicates with the first region. 
     
     
         3 . The battery apparatus of  claim 2 , wherein each of the at least one battery module passes through and is fastened to the isolation baffle, wherein one part of each of the at least one battery module is in the first region, and wherein the other part of each of the at least one battery module is in the second region. 
     
     
         4 . The battery apparatus of  claim 1 , further comprising at least one temperature sensor disposed inside the protection housing or inside the at least one battery module, wherein the at least one temperature sensor is configured to;
 detect a first temperature value inside the protection housing; and   detect a second temperature value inside the at least one battery module, and   wherein the control unit is configured to:
 receive the first temperature value and the second temperature value; 
 determine whether the first temperature value and the second temperature value are greater than afirst threshold; and 
 control the first exhaust assembly to be in the first state and control the second exhaust assembly to be in the second state when the first temperature value and the second temperature value are greater than the first threshold, or control the first exhaust assembly to be in the second state and control thesecond exhaust assembly to be in the first state when the first temperature value and the second temperature value are greater than the first threshold. 
   
     
     
         5 . The battery apparatus of  claim 1 , further comprising at least one gas sensor disposed inside the protection housing, wherein the at least one gas sensor is configured to detect a gas composition inside the protection housing, and wherein the control unit is further configured to:
 receive a detection result from the at least one gas sensor; and   determine whether the detection result has a specific gas; and   control the first exhaust assembly to be in the first state and control the second exhaust assembly to be in the second state when the detection result comprises the specific gas, or control the first exhaust assembly to be in the second state and control the second exhaust assembly to be in the first state when the detection result comprises the specific gas.   
     
     
         6 . The battery apparatus of  claim 1 , wherein the second region is isolated from the inside of the protection housing when the first exhaust assembly is not in the first state and not in the second state, and wherein the first region is isolated from the outside inside of the protection housing when the at second exhaust assembly is not in the first state and not in the second state. 
     
     
         7 . The battery apparatus of  claim 1 , wherein the first exhaust assembly and thesecond exhaust assembly are disposed on different surfaces of the protection housing, and wherein the surfaces are side faces of the protection housing. 
     
     
         8 . The battery apparatus of  claim 2 , further comprising a heat dissipation channel comprising a first port and a second port, wherein the first port is configured to communicate first gas from the first region into the second region, and wherein the second port is configured to communicate second gas from the second region into the first region. 
     
     
         9 . The battery apparatus of  claim 8 , wherein the heat dissipation channel is disposed on the control unit, and wherein a portion of the heat dissipation channel comprises a housing of the control unit. 
     
     
         10 . The battery apparatus of  claim 8 , further comprising at least one first exhaust fan disposed in the heat dissipation channel, wherein the at least one first exhaust fan is configured to:
 communicate the first gas into the second region; or   communicate the second gas into the first region.   
     
     
         11 . The battery apparatus of  claim 8 , further comprising: at least one second exhaust fan disposed at an exhaust port of the at least one battery module, wherein the at least one second exhaust fan is configured to:
 communicate the first gas in the first region through the battery module; and   communicate the second gas in the second region through the battery module.   
     
     
         12 . The battery apparatus of  claim 8 , wherein the at least one battery module comprises an exhaust port that is located in the second region. 
     
     
         13 . The battery apparatus of  claim 8 , further comprising at least one third exhaust fan disposed on the isolation baffle, wherein the at least one third exhaust fan is configured to:
 communicate the first gas into the second region; or   communicate the second gas into the first region.   
     
     
         14 . A method for controlling a battery apparatus to exhaust gas, wherein the method comprises:
 receiving detection data of a detection unit, wherein the detection data is at least one of a temperature value or a gas composition; and   gas; controlling a first exhaust assembly to be in a first state and a second exhaust assembly to be in a second state when the detection data is at least one of greater than a specified threshold or comprises information on a specified gas, wherein the first state is when first gas in outside a protection housing is intook into the protection housing, and wherein the second state is when second gas inside the protection housing is exhausted to the outside of the protection housing; or   controlling the first exhaust assembly to be in the second state and the second exhaust assembly to be in the first state when the detection data is greater than at least one of the specified threshold or comprises information on the specified gas.   
     
     
         15 . The method of  claim 14 , further comprising:
 dividing, with an isolation baffle, the inside of the protection housing into a first region and a second region, wherein the first region communicates with the second region, wherein the first exhaust assembly communicates with the second region, wherein the second exhaust assembly communicates with the first region; and   controlling the first exhaust assembly to exhaust the first gas outside the protection housing into the second region and the first region and enabling the first gas to be exhausted to the outside of the protection housing from thesecond exhaust assembly; or   controlling the at second exhaust assembly toexhaust the first gas outside the protection housing into the first region and the second region, and enabling the first gas to be exhausted to the outside of the protection housing from the first exhaust assembly.   
     
     
         16 . The method of  claim 14 , further comprising:
 controlling at least one first exhaust fan to exhaust a third gas from the first region into the second region when the at least one first exhaust fan is disposed in a heat dissipation channel of the protection housing; or   controlling the at least one first exhaust fan to exhaust the third gas from the second region into the first region when the at least one first exhaust fan is disposed in the heat dissipation channel of the protection housing.   
     
     
         17 . The method of  claim 14 , further comprising:
 controlling at least one second exhaust fan to exhaust a third gas from the first region into the second region through the battery module when the at least one second exhaust fan is disposed at an exhaust port of at least one battery module; or   controlling the at least one second exhaust fan to exhaust the third gas from the second region into the first region through the battery module when the at least one second exhaust fan is disposed at the exhaust port of the at least one battery module.   
     
     
         18 . The method of  claim 14 , the method further comprising:
 controlling the at least one third exhaust fan to exhaust a third gas from the first region into the second region when the at least one third exhaust fan is disposed in the first region; or   controlling the at least one third exhaust fan to exhaust the third gas from the second region into the first region when the at least one third exhaust fan is disposed in the first region.   
     
     
         19 . An energy storage device, comprising:
 a converter configured to convert an alternating current into a direct current, convert an electrical signal of first power into an electrical signal of second power, or both; and   a battery apparatus electrically connected to the converter and configured to receive electric energy or output electric energy, wherein the battery apparatus comprises:
 a protection housing; 
 at least one battery module disposed inside the protection housing; 
 a first exhaust assembly disposed on the protection housing; 
 a second exhaust assembly disposed on the protection housing; and 
 a control unit coupled to the protection housing and configured to:
 control the first exhaust assembly to be in a first state and the second exhaust assembly to be in a second state; or 
 control the first exhaust assembly to be in the second state and the second exhaust assembly to be in the first state, 
 wherein the first state is when first gas outside the protection housing is intook into the protection housing, and 
 wherein the second state is when gas inside the protection housing is exhausted to the outside of the protection housing. 
 
   
     
     
         20 . The energy storage device of  claim 19 , wherein the battery apparatus further comprises an isolation baffle fastened to inside the protection housing, wherein the isolation baffle divides the protection housing into a first region and a second region, wherein the first region communicates with the second region, wherein the first exhaust assembly communicates with the second region, and wherein the second exhaust assembly communicates with the first region.